Analysis of sprayed Carbon nanotube films on rigid and flexible substrates

We report on the morphological, electrical and optical characteristics of Carbon nanotube (CNT) films on different transparent substrates, obtained using spray deposition. The effect of different substrate materials on the characteristics of spayed CNT films with varying thickness is investigated. While film morphology is shown to depend on the underlying surface characteristics, no significant changes in work function are observed. These results are compared to films deposited onto flexile substrates. Further, time-resolved THz spectroscopy reveals picosecond transient photoconductivity dynamics in sprayed CNT films on flexible PET substrates.